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  1. No Access

    Chapter and Conference Paper

    Experimental Study on Separation of Light Hydrocarbon Gas by PDMS Separation Membrane in Drilling Fluid

    Throughout deep and ultra-deep drilling operations, gases originating from geological formations can ingress into the wellbore via mechanisms such as underbalanced gas infiltration and gravitationnal displacem...

    Lei Zhang, Yonghai Gao, Yaqiang Qi in Proceedings of the Fifth International Tec… (2024)

  2. No Access

    Chapter and Conference Paper

    Analysis of Combined Gas Lift and Electric Submersible Pump Lifting Wellbore Fluid Production in a Heavy Oil Block in South China Sea

    In recent years, as a kind of unconventional oil energy, heavy oil has large reserves and wide distribution, and the issue of marine heavy oil exploitation has gradually attracted attention. Especially, the te...

    Na Xu, Yonghai Gao, Hongxing Yuan, **nyao Su in Proceedings of The Fourth International Te… (2022)

  3. Article

    Open Access

    Occupational status, working conditions, and health: evidence from the 2012 China Labor Force Dynamics Survey

    This study investigates the relationship between occupational status and health inequality in the working population by analyzing data from the 2012 China Labor Force Dynamics Survey. The results show that ind...

    Yaqiang Qi, Tongxin Liang, Hua Ye in The Journal of Chinese Sociology (2020)

  4. Article

    Open Access

    Regional segregation or industrial monopoly? Dual labor market segmentation and income inequality in China

    Using data from the 2010 China Family Panel Study and county- and industry-level statistics, we estimate cross-classified multilevel models to examine the determinants of the income gap among Chinese workers. ...

    Yaqiang Qi, Tongxin Liang in The Journal of Chinese Sociology (2016)